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8 Best AR-15 Stripped Upper Receivers [2026]

Not sure what AR-15 stripped upper receiver to get? We go through our personal go-to mil-spec receiver, lightweight, and just plain cool options.

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So you're ready to build your own AR-15 upper but aren't sure of the upper receiver?

We've got you covered with our personal go-to mil-spec receiver and a few unique options that will turn heads.

BCM Upper Receiver
BCM Upper Receiver

If you haven't read our AR-15 Guide, which goes over all the components of an AR, I'd suggest starting there first.

Now let's dive into what you need to know and our top picks for the best AR-15 stripped uppers!

The Quick List

Table of Contents

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Best AR-15 Stripped Upper Receivers

1. BCM M4 Upper Receiver

Editor's Pick Upper
BCM M4 Upper Receiver
Prices accurate at time of writing
$129at BCM
Brownells (See Price)
AR15 Discounts (See Price)

BCM complete uppers and rifles are universally loved (see our review) so you can't go wrong with one of their complete upper receivers.

BCM 16" Mid-Length MCMR Handguard
BCM 16" Mid-Length MCMR Handguard

Everything is mil-spec and the newer versions have their logo stamped in.

BCM Upper Receiver
BCM Upper Receiver

T-marks on the Picatinny rails are laser etched and the actual rails are correctly sized.

BCM Upper T-Marks
BCM Upper T-Marks

A note during the barrel installation process...the inside diameter of the barrel extension is slightly undersized so you'll need to loosen it up with a hair-dryer if you're having problems sliding in the barrel.

The end-result is a tighter-fitting and more accurate setup.

BCM Uppers (T To B), 11.5, Pinned 14.5, 16
BCM Uppers (T To B), 11.5, Pinned 14.5, 16

If you're set on a stripped version at a nice discount...check out their blemished versions (reviews say that you can barely find anything wrong).

BCM Blem M4 Upper Receiver
Prices accurate at time of writing
$47at BCM

2. Aero Precision M4E1 Stripped Upper Receiver

Best Billet-Looking Upper
Aero Precision M4E1 Stripped Upper Receiver
Prices accurate at time of writing
$127at AR15 Discounts
Brownells (See Price)

The Aero M4E1 is an upgraded version of the mil-spec stripped upper that gives a billet look without the doubling in price. It is my personal favorite for my builds and is what lives on my home defense gun.

Check out our full review of the M4E1.

Aero Precision M4E1 16 Midlength Pencil
Aero Precision M4E1 with 16-Inch Midlength Pencil Barrel

Remember to finish out your stripped upper with an upper parts kit, or simply look at assembled uppers which are basically the same price but with the upper parts already installed.

Assembled uppers are great if you want to save yourself a little bit of time and potential stress — no need to scrape anything during installation or go nuts trying to get the dust cover on.

Ejection Port Spring
Dust Cover Spring, SnareMan

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3. Aero Precision No Forward Assist Upper

Best No Forward Assist Upper
Aero No Forward Assist Upper
Prices accurate at time of writing
$103at Brownells

If you have never used the forward assist and want to shave some weight off or keep it simple, you might consider the no forward assist upper from Aero.

In my opinion, I like the look of the forward assist, and I go by the mantra that I'd rather have it and not use it than need it and not have it --- especially on a more duty rifle build.

4. VLTOR MUR Upper Receiver

Most Durable Upper
VLTOR MUR Upper Receiver
Prices accurate at time of writing
$200at Brownells
OpticsPlanet (See Price)
Rainier Arms (See Price)

The VLTOR MUR Upper Receiver has thicker walls to make it a more rigid shooting platform which should translate to more accuracy and durability. Plus, it looks different and cool enough to get some envious looks.

What do you think of the VLTOR? Rate it below!

Readers’ Ratings

4.99/5 (2370 Votes)

Your Rating

5. Battle Arms Development Lightweight Upper

If you want to go lightweight but not at the expense of extreme lightening cuts and possible reduced reliability, then the Battle Arms Development Lightweight Upper might be a great choice.

Coming in at about 6.3 ounces, this upper is nearly half the weight of a standard Aero M4E1 upper (12.3 ounces).

Plus, the Tron-esque design is sure to catch a few looks at the range.

6. Bootleg Inc Upper Receiver

Best Billet Upper
Bootleg Inc Upper Receiver
Prices accurate at time of writing
$175at OpticsPlanet

One of my latest builds uses a Bootleg Upper Receiver with their PicLOK handguard. These come with a low-profile brass deflector, no-forward assist, and captured dust cover pin that eliminates the need for an e-clip.

All that nets you an upper receiver that comes in at a scant 7.2 ounces.

Bootleg Upper Receiver and Rail
Bootleg Upper Receiver and Rail

This upper makes for cool and slick build, especially when paired with their adjustable gas BCG (no more switching out your gas block).

Bootleg Upper and Adjustable BCG
Bootleg Upper and Adjustable BCG

If you want something different yet functional, you can't go wrong with the offerings from Bootleg.

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7. Icon Defense Forged Upper Receiver

This brand is the brainchild of Mike Miller and Rick Olsen, who have years of experience in firearms.

These guys have brands like Hodge Defense, Killer Innovations, and Sons of Liberty in the resumes, and they applied their machining knowledge to the products of Icon Defense

Icon Defense Receiver Set upper left

This stripped upper is forged from 7075 T6 Aluminum and features Type 3 hard coat anodizing. The finish is very nice, but the tolerances are impressive.

Icon Defense says they hold their fit between uppers and lowers at .001".

Icon Defense Receiver Set upper right

They claim it's the best fitment in the industry. We assembled a pair and it was snug with zero play whatsoever.

Coming in at 6.94 oz. the Icon Defense upper is lightweight, strong, fits extremely well, and looks great to boot!

Tightest Fitting Upper
Icon Defense Forged Upper Receiver
Prices accurate at time of writing
$113at OpticsPlanet
Primary Arms (See Price)
Primary Arms (See Price)

Best Upper Receiver Parts

Now that you've got the stripped upper receiver...you'll need the parts to finish them out.

Aero is always GTG...

Aero Upper Receiver Parts Kit
Prices accurate at time of writing
$23at AR15 Discounts

Upper Receiver Forge Marks

AR-15 Upper Receive Forge Mark
AR-15 Upper Receive Forge Mark

You might have heard about forge marks, which are above the forward assist. These marks designate which metal forging company created the upper blank. The end company (such as Aero Precision) is the one that actually machines the upper into its final state.

Ultimately, the forge mark itself is relatively inconsequential since the quality really comes from the company that machines the blanks.

Frequently Asked Questions

Final Thoughts

Now that you've seen our suggestions for the best AR-15 upper receivers, you're one step closer to your build.

Aero M4E1 16" Build
Aero M4E1 16" Build

Let us know in the comments below if there is an upper you like that isn't on the list. And if you're ready to build, here's our AR-15 upper assembly visual guide.

Latest Updates

August 18, 2024: Added BCM and removed F1 Firearms. Added info for several picks.

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Written By

Eric Hung

Eric Hung

Founder, CEO

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I'm Eric Hung, the founder of Pew Pew Tactical, and I love guns. For over 10 years I've been soaking up as much information as possible online, in competitions, classes, and from my own testing. Now I hope to bring that info to you! I've written over 250 articles on Pew Pew Tactical that are read by millions a month. I'm also an NRA certified pistol instructor and avid USPSA/3-Gun/NRL22 competitor. Learn more at About Us.

WHY YOU CAN TRUST PEW PEW TACTICAL

Since 2016, the Pew Pew Tactical team has been dedicated to providing expert reviews and in-depth testing of guns and gear. All while keeping in mind that guns are fun and that readers come first.

Written by American gun enthusiasts, competitive shooters, former military/law enforcement personnel, and trained journalists, we use our extensive skill sets and knowledge to bring a well-rounded, researched approach to our content.

We pride ourselves on hands-on testing and real-world experience with all products we recommend. Further, we believe in objectivity and approaching all articles without bias – our few advertisers never influence our reviews or recommendations. We believe in giving our readers a comprehensive understanding of how and why a product is great – or isn’t. And if it’s good enough for us to use ourselves and recommend to loved ones.

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Conversation

25 Comments

Join the discussion

  • So glad I discovered pew pew! Great to the point articles.
    ...

    • Jacki Billings

      Thanks for reading!
      ...
  • So. Not a new article, apparently, with comments dated from 2022 all the way back to 2016!!

    While you’re recycling your shills for higher-priced brands, I’ve been building with the cheapest upper receivers available, even factory blems. But all of them are known brands, nothing has showed up from ChinaManufacturedJunk, Inc. 2 issues out of about 60 builds over past few years, and they were easily cured. And all my builds, even with cheap barrels, will easily dispatch predators at 100 yards, or provide minute-of-perp self defense accuracy.

    If someone wants to spend twice, even 6 or 8 times the price of a non-famous but still mil-spec receiver, that’s their business. Myself, I would rather buy more ammo!!
    ...
  • 1
    Aero M4E1 upper weighs 6.9 oz, not 12.3
    ...
  • VLTOR MUR has compatibility issues with some lowers, like the LMT MARS-L, so be aware.
    ...
  • Does the Aero M4E1 enhanced upper have to be used with an Aero hand guard? I’m building and don’t think I want to paint myself onto a corner if I want to change later.

    Thanks!
    ...

    • GuyActual

      No, I have used numerous brands with the M4E1 builds. Note that some rails that may have anti-rotation tabs may have to be slightly alters, but usually it will not affect performance if everything is torqued correctly. (Also usually doesn't affect appearance either if trimmed properly as they will sit flush.)
      ...

      • Actual Guy

        Yes, the M4E1 ENHANCED does require a specific handguard. The normal M4E1 does not. 2 years late yes but someone might read this now.
        ...
  • 1
    2
    The Firearms industry lacks Imagination, all the AR platforms still look the same as from 60 years ago with very little variations from the originals. with the evolution of polymers & 3D printing and computerised CNC machines. I figured we would e seeing stuff more like the M41A Pulse Rifle from the movie Alien, or at least something more futuristic anyway. Do not get me Wrong I love the AR- Platform and will hopefully have at least one AR till my dying days. I would just like to have the chance to have something of the AR platform more modernised such as the upper and lower receiver just to change the overall look from that tired 60 year old styling isn't it about time the AR platform gets an aesthetic face lift. before some other firearm platform replaces it all together, It has already started, look at the SIG MCX SPEAR XM5 it is already headed in that direction. this rebuttal was just my opinion and not meant to offend anybody I apologise if I did. God Bless and as always LET's Go Brandon and long Live the MAGA KING
    ...

    • Eric Simonetti

      Check out SLR Rifleworks upper and lower receivers.
      ...
  • Going to modify my S&W M&P 15 Sport from its stock 16" barrel/carbine-length-gas-tube configuration to an 18" barrel with a rifle-length-gas tube configuration. This seems like a good opportunity to transform the gun into a Wilde-chambered unit. Besides a Wilde-configured barrel, what other Wilde-configured parts (if any) will be needed? I can't tell from PewPew's write-ups whether the upper receiver and/or any other components would need to be replaced. Following the "do it right or do it twice" rubric, I want to marshal all of the parts prior to doing this mod.
    ...

    • Axel Anderson

      All you'll need is a barrel. Your upper receiver will never need to be changed while changing cartridges. The most you will ever need to change is your bolt, barrel, and magazine. A lot of guys will by whole new upper assemblies because it is easier to switch calibers on the go that way. Hope this helps!
      ...

      • GuyActual

        Possibly a new gas tube depending on gas system. Mid vs Rifle (VS all others in between, lol)
        ...
  • Howdy, Is that Bootleg upper O.D. green ?
    ...
  • I’m looking at using the bootleg upper but reading people say it’s not compatible with their handguards. Can you confirm if it’ll fit with an aero or more generic handguards?
    ...

    • Eric Hung

      Hi Michael, I got it as a set so I didn't have the chance to try it with others. I'd ask Bootleg or check online to see what other ones are compatible.
      ...
  • I like how the first 4 are Aero. Not that I think that is a bad thing.
    ...
  • Is the mil spec aero, the numer one of the list, different than the m4e1 aero or the m5e1 where the gas tube goes? I want to do a build with an inconel tube and vseven says their tubes are no go on m4e1 uppers on their site. I dont have both to compare.
    ...